Home / 10,121.20-13,964.88-6,142.22

Finding the Fourth Proportional to 10,121.20, 13,964.88 and 6,142.22

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Solution

The fourth proportional to 10,121.20, 13,964.88 and 6,142.22 is: 8,474.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,121.20 : 13,964.88 = 6,142.22 : x
  2. Step 2: Convert to fraction form
    10,121.20/13,964.88 = 6,142.22/x
  3. Step 3: Cross multiply
    10,121.20x = 13,964.88 × 6,142.22
  4. Step 4: Simplify right side
    10,121.20x = 85,775,365.23
  5. Step 5: Solve for x
    x = 85,775,365.23/10,121.20
  6. Step 6: Final answer
    x = 8,474.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.